Hope this isn't too late. My Mother, Viola Werremeyer Echele, had Genealogy reports on the Zerr family and the Boerding family which are in my possession. They date back to their arrival in Missouri. The one on the Zerr family shows burials in All Saints Cemetery in St. Peters, MO. My second cousin, Sharlene Boerding Swinford will turn 75 years old this August and is living in Plano, TX.
I will be happy to look up any thing for you.